Lifting-jack.



L. J. GAY.

LIFTING JACK.

APPLICATION FILED APR. 10, 1914.

Patented. Apr. 6, 1915.

a Romne LOYD JOSHUA GAY, 0F BROOKFIELD, GEORGIA.

LIFTINGr-JACK.

Specification of Letters Patent.

Patented Apr. 6, 1915.

Application filed April 10, 191%. Serial No. 831,029.

To all whom it may concern Be it known that I, LOYD J. GAY, a citizen ofthe United States of America, residing at Brookfield, in the county ofTift and State of Georgia, have invented certain new and usefulImprovements in Lifting-Jacks, of which the following is aspecification.

This invention relates to lifting jacks and it has for its object theprovision of an improved article of this nature constructed in suchmanner that a lifting lever may be moved bodily with relation to thestandard of the jack to approximate working position, after which theswinging movement of the lever is utilized to lift a vehicle wheel orother object, clear of the ground.

Further objects and advantages of the invention will be set forth in thedetailed description which now follows.

in the accompanying drawin Figure 1 is a side View of a jack constructedin accordance with the invention, Fig. 2 is a partial perspective viewthereof, Fig. 3 is a partial front elevation thereof, and Fig. l is apartial rear elevation thereof.

Li re numerals designate corresponding parts in all of the figures ofthe drawing.

Referring to the drawing the numeral 5 designates a standard that issupported upon a foot or base, 6. The standard 5 is vertically andcentrally slotted throughout substantially its entire length asindicated at '7 through which slot a lever 8 works. This lever ispivoted upon the pin 9 which is supported in ears 10 of ahead 11. Thishead is preferably formed of resilient sheet metal so that its lowerportions comprise spring fingers 12 which fingers are adapted to haveyielding engagement with relatively long ratchet teeth 13 formed uponthe front face of standard 5. The rear face of the standard is providedwith ratchet teeth 14: which are reversely arranged with relation toteeth 13 and are much shorter to thereby give a liner adjustment to thethrow of lever 8 than is secured in getting the approximate position ofhead 11. The head 11 comprises the fingers l2 and the ears 10 and theeX- tensions 15 which latter engage about the said standard 5 to holdthe head in sliding engagement therewith. A yoke shaped pawl it ispivotally connected with the lever 8 at 17 and as the rear or handleportion of the lever is drawn downwardly this pawl rides over theratchet teeth let to hold the lever in any position to which it may bemoved to hold a load, such as a vehicle axle or wheel ivhich rests uponthe forward end 8 of the ever.

It is believed that the operation of the device will be apparent withoutfurther remarks however, it may be briefly stated that in use if it bedesired to raise a vehicle wheel from the ground, the standard isdisposed adjacent the part to be raised and the head is moved bodilywhile the handle portion of the lever is in an elevated position tothereby bring the forward end 8 of the lever to an approximate engagingposition with the part to be lifted. The head is held in this positionof preliminary adjustment by the engagement of the fingers 12 with theratchet 13. When the handle end of the lever is forced downwardly theforward end 8 thereof moves upwardly lifting the part engaged from theground. At the same time the yoke pawl 16 rides over the ratchet teeth14: in the manner above set forth.

While the elements shown and described are well adapted to serve thepurposes for which they are intended, it is to be understood that theinvention is not limited to the precise construction set forth, butincludes within its purview such changes as may be made within the scopeof the appended claims.

Having described my invention, what I claim is:

i. In a lifting jack the combination with a standard having reverselyarranged ratchet teeth upon its opposite faces, of a head slidablyengaging said standard said head being made of sheet metal andcomprising integral spring fingers adapted to engage the ratchet teethupon one face of the standard, a lever pivoted to said head and a pawlcarried by said lever for engaging the ratchet teeth upon the oppositeface of the standard.

2. In a device of the character described, the combination with avertically arranged standard which is centrally slotted and which hasreversely arranged ratchet teeth upon its opposite faces, of a sheetmetal head slidably engaged with said standard and comprising integralspring fingers adapted to engage the ratchet teeth upon one side of saidstandard, a lever pivoted to said head and a yoke shaped pawl pivoted tosaid lever and extending across said standard to engage the ratchetteeth on both sides of the slotted portion of the standard..-

3. In a devicev of the character described the combination with avertically arranged standard which is centrally slotted and which hasreversely arranged ratchet teeth upon its opposite faces, of a sheetmetal head slidably mounted upon said standard and comprising integralspring fingers extending downwardly from its lower portion, whichfingers are adapted to engage the ratchet teeth upon one side of saidstandard, a lever extending through the slotted portion of the standardand pivoted to said Copies of this patent niay be obtained for'flvecents each, by addressing the Commissioner 0':

Washington, I). G.

head upon the side reniote f'rdni said integral spring fingers, and ayoke-shaped pawl LOYD JOSHUA GAY.

Witnesses:

C. B. CooKsEY, J. R. BUoI-IAN.

Pat ents,

